In file included from /usr/src/gnu/lib/libstdc++/../../../contrib/libstdc++/libsupc++/eh_type.cc:32:
/usr/src/gnu/lib/libstdc++/../../../contrib/libstdc++/libsupc++/unwind-cxx.h:41:20: unwind.h: No such file or directory
In file included from /usr/src/gnu/lib/libstdc++/../../../contrib/libstdc++/libsupc++/eh_unex_handler.cc:30:
/usr/src/gnu/lib/libstdc++/../../../contrib/libstdc++/libsupc++/unwind-cxx.h:41:20: unwind.h: No such file or directory
In file included from /usr/src/gnu/lib/libstdc++/../../../contrib/libstdc++/libsupc++/pure.cc:31:
/usr/src/gnu/lib/libstdc++/../../../contrib/libstdc++/libsupc++/unwind-cxx.h:41:20: unwind.h: No such file or directory
In file included from /usr/src/gnu/lib/libstdc++/../../../contrib/libstdc++/libsupc++/vec.cc:37:
/usr/src/gnu/lib/libstdc++/../../../contrib/libstdc++/libsupc++/unwind-cxx.h:41:20: unwind.h: No such file or directory
mkdep: compile failed
*** Error code 1
Stop in /usr/src/gnu/lib/libstdc++.
*** Error code 1
Stop in /usr/src/gnu/lib.
*** Error code 1
Stop in /usr/src.
*** Error code 1
Stop in /usr/src.
*** Error code 1
Stop in /usr/src.
*** Error code 1
Stop in /usr/src.